<template>
  <div class="home">
    <div>
      <header class="home-header wrap" :class="{ active: headerScroll }">
        <router-link tag="i" to="./category"
          ><i class="nbicon nbmenu2"></i
        ></router-link>
        <div class="header-search">
          <span class="app-name">新蜂商城</span>
          <i class="iconfont icon-search"></i>
          <router-link
            tag="span"
            class="search-title"
            to="./product-list?from=home"
            >山河无恙，人间皆安</router-link
          >
        </div>
        <router-link class="login" tag="span" to="./login" v-if="!isLogin"
          >登录</router-link
        >
        <router-link class="login" tag="span" to="./user" v-else>
          <van-icon name="manager-o" />
        </router-link>
      </header>
      <nav-bar />
      <swiper :list="swiperList"></swiper>
      <div class="category-list">
        <div
          v-for="item in categoryList"
          v-bind:key="item.categoryId"
          @click="tips"
        >
          <img :src="item.imgUrl" />
          <span>{{ item.name }}</span>
        </div>
      </div>
      <div class="good">
        <header class="good-header">新品上线</header>
        <div class="good-box">
          <div
            class="good-item"
            v-for="item in newGoodses"
            :key="item.goodsId"
            @click="goToDetail(item)"
          >
            <img :src="$filters.prefix(item.goodsCoverImg)" alt="" />
            <div class="good-desc">
              <div class="title">{{ item.goodsName }}</div>
              <div class="price">¥ {{ item.sellingPrice }}</div>
            </div>
          </div>
        </div>
      </div>
      <div class="good">
        <header class="good-header">热门商品</header>
        <div class="good-box">
          <div
            class="good-item"
            v-for="item in hots"
            :key="item.goodsId"
            @click="goToDetail(item)"
          >
            <img :src="$filters.prefix(item.goodsCoverImg)" alt="" />
            <div class="good-desc">
              <div class="title">{{ item.goodsName }}</div>
              <div class="price">¥ {{ item.sellingPrice }}</div>
            </div>
          </div>
        </div>
      </div>
      <div class="good" :style="{ paddingBottom: '100px' }">
        <header class="good-header">最新推荐</header>
        <div class="good-box">
          <div
            class="good-item"
            v-for="item in recommends"
            :key="item.goodsId"
            @click="goToDetail(item)"
          >
            <img :src="$filters.prefix(item.goodsCoverImg)" alt="" />
            <div class="good-desc">
              <div class="title">{{ item.goodsName }}</div>
              <div class="price">¥ {{ item.sellingPrice }}</div>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { nextTick, onMounted, reactive, ref, toRefs } from "vue";
import swiper from "../components/Swiper/index";
import navBar from '../components/NavBar/index'
import { getHome } from "../api/home";
import { Toast } from "vant";
import { getLocal } from "../common/js/utils";
import router from '../router';
export default {
  name: "home",
  components: {
    swiper,
    navBar
  },
  setup() {
    const state = reactive({
      swiperList: [], // 轮播图列表
      categoryList: [
        {
          name: "新蜂超市",
          imgUrl: "//s.yezgea02.com/1604041127880/%E8%B6%85%E5%B8%82%402x.png",
          categoryId: 100001,
        },
        {
          name: "新蜂服饰",
          imgUrl: "//s.yezgea02.com/1604041127880/%E6%9C%8D%E9%A5%B0%402x.png",
          categoryId: 100003,
        },
        {
          name: "全球购",
          imgUrl:
            "//s.yezgea02.com/1604041127880/%E5%85%A8%E7%90%83%E8%B4%AD%402x.png",
          categoryId: 100002,
        },
        {
          name: "新蜂生鲜",
          imgUrl: "//s.yezgea02.com/1604041127880/%E7%94%9F%E9%B2%9C%402x.png",
          categoryId: 100004,
        },
        {
          name: "新蜂到家",
          imgUrl: "//s.yezgea02.com/1604041127880/%E5%88%B0%E5%AE%B6%402x.png",
          categoryId: 100005,
        },
        {
          name: "充值缴费",
          imgUrl: "//s.yezgea02.com/1604041127880/%E5%85%85%E5%80%BC%402x.png",
          categoryId: 100006,
        },
        {
          name: "9.9元拼",
          imgUrl: "//s.yezgea02.com/1604041127880/9.9%402x.png",
          categoryId: 100007,
        },
        {
          name: "领劵",
          imgUrl: "//s.yezgea02.com/1604041127880/%E9%A2%86%E5%88%B8%402x.png",
          categoryId: 100008,
        },
        {
          name: "省钱",
          imgUrl: "//s.yezgea02.com/1604041127880/%E7%9C%81%E9%92%B1%402x.png",
          categoryId: 100009,
        },
        {
          name: "全部",
          imgUrl: "//s.yezgea02.com/1604041127880/%E5%85%A8%E9%83%A8%402x.png",
          categoryId: 100010,
        },
      ],
      newGoodses: [],
      hots: [],
      recommends: [],
      isLogin: false,
      headerScroll: false,
    });
    onMounted(async () => {
      const token = getLocal("TOKEN");
      if (token) {
        state.isLogin = true;
      }
      getHomeData();
    });
    const getHomeData = async () => {
      Toast.loading({
        message: "加载中...",
        forbidClick: true,
      });
      const { data } = await getHome();
      state.swiperList = data.carousels;
      state.newGoodses = data.newGoodses;
      state.hots = data.hotGoodses;
      state.recommends = data.recommendGoodses;
      Toast.clear();
    };
    const goToDetail = (item) => {
        router.push({path: `/product/${item.goodsId}`})
    }
    nextTick(() => {
      window.addEventListener("scroll", () => {
        let scrollTop =
          window.pageYOffset ||
          document.documentElement.scrollTop ||
          document.body.scrollTop; // 兼容写法 safari 比较特别，有自己获取scrollTop的函数 ： window.pageYOffset
        scrollTop > 200
          ? (state.headerScroll = true)
          : (state.headerScroll = false);
      });
    });
    return {
      ...toRefs(state),
      goToDetail
    };
  },
};
</script>

<style lang='less' scoped>
@import "../common/style/mixin";
.home-header {
  position: fixed;
  left: 0;
  top: 0;
  .wh(100%, 50px);
  .fj();
  line-height: 50px;
  padding: 0 15px;
  .boxSizing();
  font-size: 15px;
  color: #fff;
  z-index: 10000;
  .nbmenu2 {
    color: @primary;
  }
  &.active {
    background: @primary;
    .nbmenu2 {
      color: #fff;
    }
    .login {
      color: #fff;
    }
  }

  .header-search {
    display: flex;
    .wh(74%, 20px);
    line-height: 20px;
    margin: 10px 0;
    padding: 5px 0;
    color: #232326;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 20px;
    .app-name {
      padding: 0 10px;
      color: @primary;
      font-size: 20px;
      font-weight: bold;
      border-right: 1px solid #666;
    }
    .icon-search {
      padding: 0 10px;
      font-size: 17px;
    }
    .search-title {
      font-size: 12px;
      color: #666;
      line-height: 21px;
    }
  }
  .icon-iconyonghu {
    color: #fff;
    font-size: 22px;
  }
  .login {
    color: @primary;
    line-height: 52px;
    .van-icon-manager-o {
      font-size: 20px;
      vertical-align: -3px;
    }
  }
}
.category-list {
  display: flex;
  flex-shrink: 0;
  flex-wrap: wrap;
  width: 100%;
  padding-bottom: 13px;
  div {
    display: flex;
    flex-direction: column;
    width: 20%;
    text-align: center;
    img {
      .wh(36px, 36px);
      margin: 13px auto 8px auto;
    }
  }
}
.good {
  .good-header {
    background: #f9f9f9;
    height: 50px;
    line-height: 50px;
    text-align: center;
    color: @primary;
    font-size: 16px;
    font-weight: 500;
  }
  .good-box {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    .good-item {
      box-sizing: border-box;
      width: 50%;
      border-bottom: 1px solid #e9e9e9;
      padding: 10px 10px;
      img {
        display: block;
        width: 120px;
        margin: 0 auto;
      }
      .good-desc {
        text-align: center;
        font-size: 14px;
        padding: 10px 0;
        .title {
          color: #222333;
        }
        .price {
          color: @primary;
        }
      }
      &:nth-child(2n + 1) {
        border-right: 1px solid #e9e9e9;
      }
    }
  }
}
.floor-list {
  width: 100%;
  padding-bottom: 50px;
  .floor-head {
    width: 100%;
    height: 40px;
    background: #f6f6f6;
  }
  .floor-content {
    display: flex;
    flex-shrink: 0;
    flex-wrap: wrap;
    width: 100%;
    .boxSizing();
    .floor-category {
      width: 50%;
      padding: 10px;
      border-right: 1px solid #dcdcdc;
      border-bottom: 1px solid #dcdcdc;
      .boxSizing();
      &:nth-child(2n) {
        border-right: none;
      }
      p {
        font-size: 17px;
        color: #333;
        &:nth-child(2) {
          padding: 5px 0;
          font-size: 13px;
          color: @primary;
        }
      }
      .floor-products {
        .fj();
        width: 100%;
        img {
          .wh(65px, 65px);
        }
      }
    }
  }
}
</style>